802172720 has 20 divisors (see below), whose sum is σ = 1865051760. Its totient is φ = 320869056.

The previous prime is 802172717. The next prime is 802172743. The reversal of 802172720 is 27271208.

802172720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5013500 + ... + 5013659.

It is an arithmetic number, because the mean of its divisors is an integer number (93252588).

Almost surely, 2^802172720 is an apocalyptic number.

802172720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

802172720 is an abundant number, since it is smaller than the sum of its proper divisors (1062879040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

802172720 is a wasteful number, since it uses less digits than its factorization.

802172720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10027172 (or 10027166 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 802172720 is about 28322.6538304588. The cubic root of 802172720 is about 929.1574131230.

The spelling of 802172720 in words is "eight hundred two million, one hundred seventy-two thousand, seven hundred twenty".